Is it too early?

I was supposed to start yesterday and am still waiting for AF. This is the first month I tracked ovulation even though I've been off bc for one year. I've been super emotional all week. More than usual, I could cry over anything. I took a test after work yesterday and it was negative. After a year of dissapointment, I'm not surprised. I didn't take a test today because I figured it would still be negative. How many days would you wait to take one again if AF doesn't show? I just hate being dissapointed.